Well I've got 19 third party apps installed and they all seem to be working okay.
Pocket Day Pro
Pocket Day Sports
Medievil Chess Kings 2
Card Games Pack 1
Pro Golf Paradise
And with that I'm going to stop. At least I know I can get around the errors by simply reloading the OS. It's just a pain waiting for the load (takes 15 minutes) and then having to do the Enterprise Activation each time after (cabled activation doesn't always work 100%.)
For now I'll keep it.
P.S. The replacement is not unlocked yet.